Update app.py

app.py

@@ -78,7 +78,7 @@ def create_video(images, durations, speech_path, image_size=(640, 480)):
         clips.append(clip)
         
     black_start = mp.ColorClip(image_size, color=(0,0,0), duration=1)
-    black_end = mp.ColorClip((image_size, color=(0,0,0), duration=2)
+    black_end = mp.ColorClip(image_size, color=(0,0,0), duration=2)
     video = mp.concatenate_videoclips([black_start] + clips + [black_end])
     audio = mp.AudioFileClip(speech_path)
     final_video = video.set_audio(audio)